What does it mean by saying man with a wicked twinkle in his eye?

The phrase "man with a wicked twinkle in his eye" suggests that the person possesses a mischievous or playful nature, often hinting at a sense of humor or a penchant for trouble. The "twinkle" implies a spark of excitement or cleverness, indicating that he might engage in playful antics or have a secretive, sly side. Overall, it paints a picture of someone who is charming yet possibly unpredictable.